JB/T 7966.10-1999 This standard is a revision of JB/T 7966.10-95 "Technical Requirements for Die Milling Cutters". During the revision, the chapter on performance test was deleted and editorial changes were made in accordance with relevant regulations. Other technical contents remained unchanged. This standard is part of the JB/T 7966 "Mold Milling Cutter" series of standards, which includes the following 10 parts: JB/T 7966.1: Straight shank cylindrical ball nose end mill JB/T 7966.2: Flattened straight shank cylindrical ball nose end mill JB/T 7966.3: Morse taper shank cylindrical ball nose end mill JB/T 7966.4: Straight shank conical end mill JB/T 7966.5: Flattened straight shank conical end mill JB/T 7966.6: Straight shank conical ball nose end mill JB/T 7966.7: Flattened straight shank conical ball nose end mill JB/T 7966.8: Morse taper shank conical end mill JB/T 7966.9: Morse taper shank conical ball nose end mill JB/T 7966.10: Technical conditions This standard specifies the technical requirements for mold milling cutters and the basic requirements for marking and packaging. This standard applies to mold milling cutters produced according to JB/T 7966.1~7966.9. This standard was first issued in 1986 as GB 6337-86 and was adjusted to JB/T 7966.10-95 in April 1996. JB/T 7966.10-1999 Mold milling cutters Part 10: Technical conditions JB/T7966.10-1999 standard download decompression password: www.bzxz.net

ICS25.100.20
Machinery Industry Standard of the People's Republic of China
JB/T7966.1~7966.10-1999
Mold Milling Cutter
Published on 1999-05-20
National Bureau of Machinery Industry
Implementation on 2000-01-01
JB/T7966.10—1999
This standard is a revision of JB/T7966.10—95 (formerly GB6337-86) "Technical Conditions for Mold Milling Cutter". The chapter on performance test was deleted during the revision, and editorial modifications were made in accordance with relevant regulations. Other technical contents remained unchanged. This standard is part of the JB/T7966 "Mold Milling Cutter" series of standards, which includes the following 10 parts: JB/T 7966.1-1999wwW.bzxz.Net
JB/T 7966,21999
JB/T 7966.31999
JB/T 7966.4—1999
JB/T7966.5—1999
JB/T7966.6—1999
JB/T 7966.7-1999
JB/T 7966.8—1999
JB/T7966.9—1999
JB/T7966.10-1999
Mold milling cutters Part 1: Straight shank cylindrical ball end mills Mold milling cutters
Mold milling cutters
Mold milling cutters
Mold milling cutters
Mold milling cutters
Mold milling cutters
Mold milling cutters
Mold milling cutters
Mold milling cutters
Part 2: Flattened straight shank cylindrical ball end mills Milling cutters Part 3: Cylindrical ball end mills with Morse taper shanks Part 4: Tapered end mills with straight shanks Part 5: Flattened tapered end mills with straight shanks Part 6: Tapered ball end mills with straight shanks Part 7: Flattened tapered ball end mills with straight shanks Part 8: Tapered end mills with Morse taper shanks Part 9: Tapered ball end mills with Morse taper shanks Part 10: Technical conditions This standard replaces JB/T7966.10-95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Tools. The responsible drafting units of this standard are Chengdu Tool Research Institute and Changshu Measuring Tool and Cutting Tool Factory. 38
1 Scope
Machinery Industry Standard of the People's Republic of China
Mold milling cutter
Part 10: Technical conditions
This standard specifies the technical requirements for mold milling cutters, and the basic requirements for marking and packaging. This standard applies to mold milling cutters produced in accordance with JB/T7966.1~7966.9. 2 Referenced standards
JB/T7966.10—1999
JB/T7966.1095
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 6118—1996
JB/T 7966.1—1999
JB/T 7966.2—1999
JB/T7966.3—1999
JB/T 7966.4—1999
JB/T7966.5—1999
JB/T7966.61999
JB/T7966.7—1999
JB/T 7966.81999
JB/T 7966.91999
3 Technical requirements
Technical conditions for end mills
Mold milling cutters Part 1: Straight shank cylindrical ball end mills Part 2: Front flat straight shank cylindrical ball end mills Mold milling cutters
Mold milling cutters
Part 3: Morse taper shank cylindrical ball end mills Part 4: Straight shank circular dimensional end mills
Mold milling cutters
Mold milling cutters Part 5: Cutting Flat straight shank conical end mill Part 6: Straight shank conical ball end mill Mold milling cutter
Mold milling cutter
Part 7: Flattened straight shank conical ball end mill Part 8: Morse taper shank conical end mill Mold milling cutter:
Mold milling cutter Part 9: Morse taper shank conical ball end mill 3.1 The surface of the milling cutter should not have cracks, the cutting edge should be sharp, and there should be no defects such as chipping, blunting and annealing that affect the performance. Welded milling cutters should not have sand holes and incomplete penetration at the weld. 3.2 The surface roughness of the milling cutter shall be in accordance with the following provisions: a) Front and back of the teeth: R, 6.3μm; b) The outer circle of the shank of the ordinary straight shank:
R.1.25μm
c) The outer circle of the shank of the flattened and tapered shanks:
R.0.65μm.
3.3 The grooves of conical milling cutters should be made into grooves with equal helix angles. 3.4 The circumferential cutting edge and the ball-end cutting edge should be smoothly connected. 3.5 The shape and position tolerances shall be in accordance with Table 1.
Approved by the State Machinery Industry Bureau on May 20, 1999, and implemented on January 1, 2000
Radial run-out of circumferential cutting edge to shank axisSpherical oblique circular run-out of ball-end cutting edge to shank axisOblique circular run-out of circumferential cutting edge to shank axisEnd face circular run-out of end cutting edge to shank axis
Outer diameter taper of cylindrical ball-end end mill
JB/T 7966.10—1999
Short type, standard type
Note: The detection method of milling cutter run-out shall be in accordance with GB/T6118. 0.04
3.6 The working part of the milling cutter shall be made of W6Mo5Cr4V2 or other high-speed steel with equivalent performance. 3.7 Hardness
d≤16
d≤6mm The working part hardness of cylindrical ball end mills is: 62~65HRC, and the working part hardness of other milling cutters is 3.7.1
63~66HRC.
3.7.2 The shank of the milling cutter is: ordinary straight shank and taper shank ≥30HRC: flattened straight shank 50HRC
4 Marking and packaging
4.1 Marking
4.1.1 The milling cutter should be marked with: manufacturer's trademark, milling cutter diameter, semi-cone angle α/2 (only for tapered milling cutters), material brand or code. Note: Milling cutters with a shank diameter of ≤5mm are not allowed to be marked with the manufacturer's trademark. 4.1.2 The packaging box of the milling cutter should be marked with: product name, standard code, manufacturer name, address and trademark, milling cutter diameter, semi-cone angle α2 (only for conical milling cutters), number of teeth, material, number of pieces, and year and month of manufacture. 4.2 Packaging
The milling cutter should be treated with rust prevention before packaging: the packaged milling cutters should be protected from damage. 40
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